Tag: Linux

A new campaign employing ClickFix attacks has been spotted targeting both Windows and Linux systems using instructions that make infections on either operating system possible. ClickFix is a social engineering tactic where fake verification systems or application errors are used to trick website visitors into running console commands that install malware. These attacks have traditionally […]

​Offensive Security warned Kali Linux users to manually install a new Kali repository signing key to avoid experiencing update failures. The announcement comes after OffSec lost the old repo signing key (ED444FF07D8D0BF6) and was forced to create a new one (ED65462EC8D5E4C5) signed by Kali Linux developers using signatures available on the Ubuntu OpenPGP key server. However, […]

In a rather clever attack, hackers leveraged a weakness that allowed them to send a fake email that seemed delivered from Google’s systems, passing all verifications but pointing to a fraudulent page that collected logins. The attacker leveraged Google’s infrastructure to trick recipients into accessing a legitimate-looking “support portal” that asks for Google account credentials. […]

Three security bypasses have been discovered in Ubuntu Linux’s unprivileged user namespace restrictions, which could be enable a local attacker to exploit vulnerabilities in kernel components. The issues allow local unprivileged users to create user namespaces with full administrative capabilities and impact Ubuntu versions 23.10, where unprivileged user namespaces restrictions are enabled, and 24.04 which has […]

Kali Linux has released version 2025.1a, the first version of 2025, with one new tool, desktop changes, and a theme refresh. Kali Linux is a distribution created for cybersecurity professionals and ethical hackers to red team exercises, penetration testing, security audits, and research against networks. As is typical for the year’s first version, the Kali […]

Over 660,000 exposed Rsync servers are potentially vulnerable to six new vulnerabilities, including a critical-severity heap-buffer overflow flaw that allows remote code execution on servers. Rsync is an open-source file synchronization and data transferring tool valued for its ability to perform incremental transfers, reducing data transfer times and bandwidth usage. It supports local file systems […]

A new Linux rootkit malware called Pumakit has been discovered that uses stealth and advanced privilege escalation techniques to hide its presence on systems. The malware is a multi-component set that includes a dropper, memory-resident executables, a kernel module rootkit, and a shared object (SO) userland rootkit. Elastic Security discovered Pumakit in a suspicious binary […]

The first UEFI bootkit specifically targeting Linux systems has been discovered, marking a shift in stealthy and hard-to-remove bootkit threats that previously focused on Windows. Named ‘Bootkitty,’ the Linux malware is a proof-of-concept that works only on some Ubuntu versions and configurations rather than a fully fledged threat deployed in actual attacks. Bootkits are malware […]

North Korean hackers are using a new Linux variant of the FASTCash malware to infect the payment switch systems of financial institutions and perform unauthorized cash withdrawals. Previous variants of FASTCash targeted Windows and IBM AIX (Unix) systems, but a new report by security researcher HaxRob reveals a previously undetected Linux version that targets Ubuntu […]